/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:04:05,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:04:05,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:04:05,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:04:05,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:04:05,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:04:05,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:04:05,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:04:05,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:04:05,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:04:05,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:04:05,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:04:05,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:04:05,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:04:05,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:04:05,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:04:05,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:04:05,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:04:05,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:04:05,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:04:05,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:04:05,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:04:05,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:04:05,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:04:05,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:04:05,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:04:05,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:04:05,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:04:05,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:04:05,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:04:05,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:04:05,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:04:05,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:04:05,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:04:05,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:04:05,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:04:05,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:04:05,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:04:05,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:04:05,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:04:05,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:04:05,426 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:04:05,480 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:04:05,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:04:05,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:04:05,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:04:05,485 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:04:05,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:04:05,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:04:05,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:04:05,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:04:05,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:04:05,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:04:05,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:04:05,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:04:05,489 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:04:05,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:04:05,489 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:04:05,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:04:05,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:04:05,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:04:05,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:04:05,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:04:05,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:04:05,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:04:05,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:04:05,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:04:05,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:04:05,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:04:05,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:04:05,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:04:05,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:04:05,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:04:05,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:04:05,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:04:05,983 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:04:05,984 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:04:05,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130b.c [2020-10-27 01:04:06,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4ada0e3a/366ca4e0c7ae4416b7975e82ee374798/FLAG7388a7a1a [2020-10-27 01:04:06,865 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:04:06,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130b.c [2020-10-27 01:04:06,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4ada0e3a/366ca4e0c7ae4416b7975e82ee374798/FLAG7388a7a1a [2020-10-27 01:04:07,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4ada0e3a/366ca4e0c7ae4416b7975e82ee374798 [2020-10-27 01:04:07,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:04:07,181 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:04:07,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:07,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:04:07,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:04:07,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:07" (1/1) ... [2020-10-27 01:04:07,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa8d0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:07, skipping insertion in model container [2020-10-27 01:04:07,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:07" (1/1) ... [2020-10-27 01:04:07,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:04:07,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:04:07,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:07,449 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:04:07,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:07,534 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:04:07,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:07 WrapperNode [2020-10-27 01:04:07,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:07,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:04:07,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:04:07,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:04:07,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:07" (1/1) ... [2020-10-27 01:04:07,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:07" (1/1) ... [2020-10-27 01:04:07,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:07" (1/1) ... [2020-10-27 01:04:07,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:07" (1/1) ... [2020-10-27 01:04:07,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:07" (1/1) ... [2020-10-27 01:04:07,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:07" (1/1) ... [2020-10-27 01:04:07,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:07" (1/1) ... [2020-10-27 01:04:07,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:04:07,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:04:07,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:04:07,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:04:07,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:04:07,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:04:07,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:04:07,690 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:04:07,690 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-27 01:04:07,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-27 01:04:07,690 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:04:07,690 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:04:07,691 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:04:07,691 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:04:07,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:04:07,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:04:07,691 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-27 01:04:07,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:04:07,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:04:07,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:04:07,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:04:07,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:04:07,692 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-27 01:04:07,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:04:07,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:04:07,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:04:07,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 01:04:07,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:04:08,304 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:04:08,305 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-27 01:04:08,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:08 BoogieIcfgContainer [2020-10-27 01:04:08,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:04:08,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:04:08,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:04:08,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:04:08,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:04:07" (1/3) ... [2020-10-27 01:04:08,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f40dd31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:08, skipping insertion in model container [2020-10-27 01:04:08,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:07" (2/3) ... [2020-10-27 01:04:08,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f40dd31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:08, skipping insertion in model container [2020-10-27 01:04:08,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:08" (3/3) ... [2020-10-27 01:04:08,319 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130b.c [2020-10-27 01:04:08,331 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:04:08,336 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:04:08,350 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:04:08,379 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:04:08,379 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:04:08,379 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:04:08,379 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:04:08,379 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:04:08,380 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:04:08,380 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:04:08,380 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:04:08,399 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-10-27 01:04:08,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 01:04:08,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:08,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:04:08,407 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:08,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:08,414 INFO L82 PathProgramCache]: Analyzing trace with hash -575871545, now seen corresponding path program 1 times [2020-10-27 01:04:08,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:08,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55647708] [2020-10-27 01:04:08,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:08,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:08,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:08,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:08,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 01:04:08,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:04:08,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-27 01:04:08,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:08,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:08,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 01:04:08,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:08,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 01:04:08,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:04:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:09,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:09,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:09,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:09,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:09,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 01:04:09,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:09,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:09,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:04:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:09,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:09,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:09,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:09,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:04:09,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:04:09,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 01:04:09,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:09,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:09,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:04:09,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:09,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:04:09,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55647708] [2020-10-27 01:04:09,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:04:09,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:04:09,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422161118] [2020-10-27 01:04:09,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:04:09,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:04:09,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:04:09,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:04:09,128 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-10-27 01:04:09,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:04:09,443 INFO L93 Difference]: Finished difference Result 121 states and 186 transitions. [2020-10-27 01:04:09,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:04:09,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 01:04:09,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:04:09,457 INFO L225 Difference]: With dead ends: 121 [2020-10-27 01:04:09,457 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 01:04:09,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:04:09,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 01:04:09,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-27 01:04:09,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-27 01:04:09,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2020-10-27 01:04:09,512 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 20 [2020-10-27 01:04:09,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:04:09,513 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2020-10-27 01:04:09,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:04:09,513 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2020-10-27 01:04:09,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 01:04:09,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:09,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:04:09,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:04:09,515 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:09,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:09,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1727493878, now seen corresponding path program 1 times [2020-10-27 01:04:09,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:09,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213002509] [2020-10-27 01:04:09,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:04:09,568 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:04:09,569 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:04:09,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:04:09,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:04:09 BoogieIcfgContainer [2020-10-27 01:04:09,594 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:04:09,597 INFO L168 Benchmark]: Toolchain (without parser) took 2419.65 ms. Allocated memory is still 159.4 MB. Free memory was 134.5 MB in the beginning and 70.0 MB in the end (delta: 64.5 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:09,598 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:04:09,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.20 ms. Allocated memory is still 159.4 MB. Free memory was 133.8 MB in the beginning and 122.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:09,600 INFO L168 Benchmark]: Boogie Preprocessor took 60.98 ms. Allocated memory is still 159.4 MB. Free memory was 122.1 MB in the beginning and 119.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:09,600 INFO L168 Benchmark]: RCFGBuilder took 708.66 ms. Allocated memory is still 159.4 MB. Free memory was 119.9 MB in the beginning and 92.3 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:09,601 INFO L168 Benchmark]: TraceAbstraction took 1285.45 ms. Allocated memory is still 159.4 MB. Free memory was 91.8 MB in the beginning and 70.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:09,605 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 352.20 ms. Allocated memory is still 159.4 MB. Free memory was 133.8 MB in the beginning and 122.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.98 ms. Allocated memory is still 159.4 MB. Free memory was 122.1 MB in the beginning and 119.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 708.66 ms. Allocated memory is still 159.4 MB. Free memory was 119.9 MB in the beginning and 92.3 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1285.45 ms. Allocated memory is still 159.4 MB. Free memory was 91.8 MB in the beginning and 70.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someUnaryFLOAToperation at line 128, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L128] float x = -0.0f; [L129] float y = __VERIFIER_nondet_float(); [L131] COND TRUE (y < 0.0f || y > 0.0f) [L133] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); [L133] RET, EXPR fmod_float(x, y) [L133] float res = fmod_float(x, y); [L136] EXPR res == -0.0f && __signbit_float(res) == 1 [L136] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L137] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1130b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 16 SDslu, 60 SDs, 0 SdLazy, 79 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1330 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...